4-2-1 Custom headers: the 2 secondary pipes between the OEM 4 pipes and the catalytic converter, are resized to 48mm.

I want some extra hp & torque, so in the near future I 'm...

civic ek4 highflow cat questions]]>1Spoon N1 ver 1 vs ver 2Thu, 31 May 2018 17:37:00 +0000http://www.ek9.org/index.php?threads/spoon-n1-ver-1-vs-ver-2.73811/
http://www.ek9.org/index.php?threads/spoon-n1-ver-1-vs-ver-2.73811/invalid@example.com (MacLumme)MacLumme
There are both versions available to buy second hand, I can’t choose which one should I get. When the ver 2 was released? Is ver 1 noisier than ver 2? If you guys have any other info too it would be great, thanks in advance. My car is 2000 EK4 hatch.]]>5apexi ws2Thu, 10 May 2018 11:29:25 +0000http://www.ek9.org/index.php?threads/apexi-ws2.73794/
http://www.ek9.org/index.php?threads/apexi-ws2.73794/invalid@example.com (swizz977)swizz977
what applicationn did u go with because the hatchback one is different]]>1what fujitsubo exhaust?Fri, 20 Apr 2018 09:33:23 +0000http://www.ek9.org/index.php?threads/what-fujitsubo-exhaust.4099/
http://www.ek9.org/index.php?threads/what-fujitsubo-exhaust.4099/invalid@example.com (eby5838)eby583826exhaust size question jdm itr 4-1Fri, 30 Mar 2018 23:40:51 +0000http://www.ek9.org/index.php?threads/exhaust-size-question-jdm-itr-4-1.73108/
http://www.ek9.org/index.php?threads/exhaust-size-question-jdm-itr-4-1.73108/invalid@example.com (swizz977)swizz977
my question is should i run a 2.5 test pipe first and then the 60mm cat back or should i run the 60mm right after the header?

i plan on keeping the motor stock so what will happen if i run the 60mm right after the header? will i lose low end or top end? also what does this have to do with back pressure?]]>4EK9 Mugen Airbox on EG CivicSun, 18 Mar 2018 19:22:38 +0000http://www.ek9.org/index.php?threads/ek9-mugen-airbox-on-eg-civic.73769/
http://www.ek9.org/index.php?threads/ek9-mugen-airbox-on-eg-civic.73769/invalid@example.com (KRISTAPS)KRISTAPS]]>3True straight exhaustTue, 16 Jan 2018 10:44:33 +0000http://www.ek9.org/index.php?threads/true-straight-exhaust.73626/
http://www.ek9.org/index.php?threads/true-straight-exhaust.73626/invalid@example.com (TeamGas)TeamGas18SKUNK 2 MEGAPOWER RR EXHAUST SYSTEM WANTED:Sun, 14 Jan 2018 21:50:41 +0000http://www.ek9.org/index.php?threads/skunk-2-megapower-rr-exhaust-system-wanted.73633/
http://www.ek9.org/index.php?threads/skunk-2-megapower-rr-exhaust-system-wanted.73633/invalid@example.com (Bk9_97)Bk9_97
Many thanks.]]>Dyno Proven Ecu & Intake ComparisonSat, 30 Dec 2017 14:59:07 +0000http://www.ek9.org/index.php?threads/dyno-proven-ecu-intake-comparison.54743/
http://www.ek9.org/index.php?threads/dyno-proven-ecu-intake-comparison.54743/invalid@example.com (deanzer)deanzer
There is alot of talk and Mistaken People Saying That The enclosed Air intakes are better than a Open Filter's on a 3 Inch Intake arm .

If you look at the following Dyno Print-Outs You Will See i Have Stated On Each Stated on the dyno Sheet Which Ecu And Air Intake The Car Is Running at the time of Dyno Run .

These tests have all been...

Dyno Proven Ecu & Intake Comparison]]>81sticky throttle bodySun, 10 Dec 2017 12:49:47 +0000http://www.ek9.org/index.php?threads/sticky-throttle-body.72999/
http://www.ek9.org/index.php?threads/sticky-throttle-body.72999/invalid@example.com (firebass)firebass every week i vae to grease it while the last 2 years was only 1 time per year :/ i dont know if this affects that the fumes of the valve cap i have released them outside and not inside back to the induction but my...

Would that reading be saying that I have a little leak in my exhaust ?
The limit is between 0.97 and 1.03 , I'm at 1.07

Thanks in advance for your inputs I have it booked back in tomorrow at lunch and am taking it to a friends garage in the morning.]]>4Exhaust manifold bracketFri, 26 May 2017 11:32:01 +0000http://www.ek9.org/index.php?threads/exhaust-manifold-bracket.72998/
http://www.ek9.org/index.php?threads/exhaust-manifold-bracket.72998/invalid@example.com (gwailo)gwailo
It was for a B16A2 with DCsports 421 manifold, I was advised by Honda the part number was 18213-SR3-J91 (discontinued) so...